package com.yyd.designmodel.observer;

/**
 * 
 * @Description：[ 抽象主题，被观察者 ]
 *
 * @ProjectName：[designmodel]
 * @PackageName：[com.yyd.designmodel.observer.Watched]
 * @CreateDate：[2015-1-20  上午9:14:30] 
 * @Author：[yuyidi]
 */
public interface Watched {
    public void addWatcher(Watcher watcher);
    public void removeWatcher(Watcher watcher);
    public void notifyWatcher(String string);
}
